would the students who use the laptop in class have a better chance of achieving a better grade?

my research will be on the who use the laptop in class, does the student who use laptop will have the better grade than other. My research will focus on one variable which is grade. Experimental will fit my research the best. My  independent variables will be using laptop or not and dependent variables will be grade. My hypothesis will be the students who are using the laptop in class will have the lower grade than the students who didn’t because I think that they will get attracted by their laptop. From this experiment we can learn and to known that either should we bring the laptop to class or not. the difficulty of my experiment will be some of the student using their laptop playing game or surf web. but some using it to actually learning stuff. so if people who use it in right way might come out with different result.